The years passed,and I fnished cllgeand （） ajobin（）town.Once,while（）my parents,lused the

A.Fifteen years ago

B.Fifty years ago

C.Seventy years ago

D.Eighty years ago

He is_______ than I.

A.elder three years

B.old three years

C.three years elder

D.three years older

How often is the president elected for？()

A、3 years

B、4 years

C、5 years

D、6 years

A、2000 years

B、500 years

C、1500 years

D、1000 years

It was ______ I met Mr. Smith in London.

A) many years that B) for many years since

C) since many years ago when D) many years ago that

A. since a few years

B. a few years before

C. for a few years

D. a few years ago

In ten years, the grain consumption of our town decreased with 20%.()